Year	Percent
2000-01-01	55.275
2001-01-01	56.275
2002-01-01	58.525
2003-01-01	54.825
2004-01-01	54.800
2005-01-01	58.850
2006-01-01	59.150
2007-01-01	56.475
2008-01-01	55.500
2009-01-01	56.200
2010-01-01	58.850
2011-01-01	56.575
2012-01-01	55.725
2013-01-01	58.625
2014-01-01	58.625
2015-01-01	54.325
2016-01-01	53.900
2017-01-01	50.300